Abstract: A method of manufacturing a battery electrode includes a powder supply step, a vibration step, a sorting step, a moving step, and a deposition step, in the powder supply step, a powder 60 composed of granulated particles is supplied, in the vibration step, vibration is applied to the powder, in the sorting step, the powder is caused to pass through at least one opening H1, H2 to adjust a particle diameter of the granulated particles to a particle diameter that allows passing through the opening, in the moving step, the powder that has passed through the opening is moved from an outlet position P1 of the opening to a supply position P2 where the powder is supplied to the surface of a current collector 31, and in the deposition step, the powder is deposited on the surface of the current collector.

Abstract: A manufacturing method is provided for manufacturing an electrode for a lithium-ion battery having a current collector and an electrode active material layer. In the method, an electrolytic solution is added to particles created by pulverizing a mixture containing electrode active material particles and a pressure sensitive adhesive resin to obtain an electrode active material composition. The electrode active material composition is molded into sheet form on a current collector using a roll press. The electrode active material composition has a weight of the electrolytic solution based on a total weight of the electrode active material composition that is 0.1-50 wt %.

Abstract: A mechanical key includes a key pattern recessed in the mechanical key in a thickness direction and key segments separable in the thickness direction. At least one of the key segments includes a key pattern slit. The key pattern slit extends through the at least one of the key segments in the thickness direction and is shaped in conformance with the key pattern.

Abstract: An examination method includes bringing conductor probes into contact with surfaces of an examination target to measure voltage or electric resistance at points on the surfaces of the examination target, and determining whether or not the voltage or the electric resistance is out of an allowable range at any of the points. The examination target is a resin current collector, an electrode sheet having an active material layer laminated on a resin current collector, a separator-attached electrode sheet in which a separator is combined with an electrode sheet, or a unit cell including one set of a positive electrode resin current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode resin current collector, which are laminated in order. With the examination method, a defect such as a short circuit can be easily found and production yield can be improved.

Abstract: A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions using an electrolyte solution that includes lithium ions. The electrolyte solution includes at least one type of additive having a reduction potential higher than a reduction potential of a solvent contained in the electrolyte solution.

Abstract: The present invention aims to provide a method for producing a pinhole-free thin resin current collector for negative electrodes. The method for producing a sheet-shaped resin current collector for negative electrodes of the present invention includes stacking three or more layers of melts of conductive resin compositions each containing a polyolefin and a conductive filler to obtain a multilayered body, wherein the polyolefin contained in each of the conductive resin compositions that form the respective layers of the multilayered body has a melt mass flow rate of 15 to 70 g/10 min as measured at a temperature of 230° C. and a load of 2.16 kg in accordance with JIS K7210-1:2014.

Abstract: A lithium ion battery including a cell formed by sequentially stacking a positive current collector, a positive active material layer, a separator, a negative active material layer, and a negative current collector, the lithium ion battery being characterized by including a frame member disposed between the positive current collector and the negative current collector to seal the positive active material layer, the separator, and the negative active material layer, the frame member having, disposed therein, an electronic component for detecting an internal condition of the cell.

Abstract: Provided is a lithium-ion assembled battery in which two or more single cells are laminated and the DC resistance value between the single cells is low.

Abstract: A battery cell (1) has an electrode composition, a frame member (3) placed annularly so as to surround the electrode composition, and a positive electrode current collector and a negative electrode current collector for closing openings of the frame member (3) from both sides in the thickness direction. The frame member (3) has a fragile portion (9) for communicating inside and outside of the frame member (3) when the pressure inside the frame member increases above a certain level. The battery cell (1) in question allows increase in the pressure inside the frame member (3), thereby preventing damage.

Abstract: To provide a negative electrode for a non-aqueous electrolyte secondary battery that can be produced even without performing a heat treatment at a high temperature such as 2,000° C. or higher and can have the discharge capacity and the cycle characteristics (capacity retention) further increased. The negative electrode for a non-aqueous electrolyte secondary battery according to the invention has a configuration in which a negative electrode active material layer containing a negative electrode material and a binder is formed on the surface of a current collector. Further, the negative electrode material has a core portion including carbonaceous negative electrode active material particles; and a shell portion including a polyimide and silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles.

Abstract: A cell system includes: a stacked-type cell module (100) having a plurality of lithium ion unit cells (1) being stacked and having through holes (3a, 3b) formed therein; a gas supply part (31); a cooling liquid supply part (32); a temperature sensor (35); and a control part (36) that controls switching between a normal control mode and a high-temperature control mode based on a signal from the temperature sensor (35). In the normal control mode, the control part (36) controls the gas supply part (31) to supply a gas to the through holes (3a, 3b), and at the same time, controls the cooling liquid supply part (32) to stop supply of a cooling liquid, and in the high-temperature control mode, the control part (36) controls the cooling liquid supply part (32) to supply the cooling liquid to the through holes (3a, 3b) to which the gas is supplied, and at the same time, controls the gas supply part (31) to stop supply of the gas.

Abstract: A lithium-ion battery system which can appropriately determine the presence or absence of an abnormality of a unit cell. It is provided with an assembled battery formed by stacking a plurality of battery units, each of the plurality of battery units including a unit cell consisting of a lithium-ion battery and a signal output part provided in the unit cell; a signal receiving part for receiving an optical signal output by the signal output part in each of the plurality of battery units; an analysis processing part for analyzing the optical signal received by the signal receiving part; and a state determination part for determining that the assembled battery is abnormal in accordance with the analysis result of the analysis processing part.

Abstract: A mechanical key includes a key pattern recessed in the mechanical key in a thickness direction and key segments separable in the thickness direction. At least one of the key segments includes a key pattern slit. The key pattern slit extends through the at least one of the key segments in the thickness direction and is shaped in conformance with the key pattern.

Abstract: Provided is a lithium-ion assembled battery in which two or more single cells are laminated and the DC resistance value between the single cells is low.

Abstract: The battery pack has a laminated body in which unit cells are laminated one on another, a cell case having a first opening and containing the laminated body, and a first lid member to tightly close the first opening. The first opening is positioned to face, in connection with a unit cell laminated direction, a first face of the laminated body. The first lid member is configured to, if an internal pressure of the cell case is lower than atmospheric pressure, deform while keeping the tightly closing state, come into contact with the first face of the laminated body, and apply a pressure based on a differential pressure between atmospheric pressure and the internal pressure of the cell case to the contacting face.

Abstract: There is provided a constitution in which a state of an assembled battery can be managed while eliminating the need for connecting an electrical wire. There is provided a lithium ion battery module having a control unit that is configured to receive a characteristic signal representing a characteristic of a corresponding unit cell and to output a control signal obtained by encoding an identifier of the unit cell and the characteristic signal, the control unit being provided in each of the unit cells; a light emitting unit that outputs an optical signal responding to the control signal; and an optical waveguide that provides a common optical path for optical signals that are output from a plurality of the light emitting units.

Abstract: A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions. The predoping method for a negative electrode active material includes: a predoping process and a post-doping modification process. In the predoping process, the negative electrode active material is doped with lithium ions, to thereby reduce a potential of the negative electrode active material relative to lithium metal. In the post-doping modification process, after the predoping process, reaction is caused between a reactive compound that is reactive with lithium ions and lithium ions doped into the negative electrode active material, to thereby increase the potential of the negative electrode active material relative to lithium metal. The potential of the negative electrode active material relative to lithium metal is 0.8 V or more at completion of the post-doping modification process.

Abstract: The present invention provides a viscous adhesive capable of retaining the shape of an electrode and allowing for production of an electrode for a lithium-ion battery having a structure in which the energy density of the electrode does not decrease. The present invention relates to a viscous adhesive for a lithium-ion electrode which allows active materials to adhere to each other in a lithium-ion electrode, the viscous adhesive having a glass transition temperature of 60° C. or lower, a solubility parameter of 8 to 13 (cal/cm3)1/2, and a storage shear modulus and a loss shear modulus of 2.0×103 to 5.0×107 Pa as measured in a frequency range of 10?1 to 101 Hz at 20° C.

Abstract: A resin current collector provides means for improving the cycle characteristics in a lithium ion battery and includes a polyolefin resin, and a conductive carbon filler. The total surface area of the conductive carbon filler contained in 1 g of the resin current collector is 7.0 m2 or more and 10.5 m2 or less.

Abstract: A current collector for a lithium ion battery includes a first conductive resin layer and a second conductive resin layer. The first conductive resin layer includes a first conductive filler. The second conductive resin layer is formed on the first conductive resin layer and includes a second conductive filler. The first conductive filler is a conductive carbon. The second conductive filler contains at least one kind of metal element selected from the group consisting of platinum, gold, silver, copper, nickel, and titanium. A volume % of the second conductive filler in the second conductive resin layer on a first surface side, which is a first conductive resin layer side, is higher than that on the second surface side that is opposite to the first conductive resin layer.